This can make learning to spell the words quite tricky! Watch this short video to see some more examples of silent letter words. Vowel sounds are made by the letters 'a', 'e', 'i', 'o' and 'u'.
Bulletin of the Deccan College Post-Graduate and Research Institute, Vol. 14, No. 4 (March 1953), pp. 243-248 (7 pages) ...
Exactly what the whales may be saying to each other remains unknown—although working that out is CETI’s eventual goal.